Preparations from quinone vat dyestuffs.



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ALBRECHT SCHMIDT, OF HGCHST-ON-EHE-MAIN, GERMANY, ASSIGNOR T0 FARE- WERKE VORM. MEIZSTER LUCIUS & BE U'NKNG, OB EfilCES'l ON-THEJEAIN, GEE- EEAN A LORPQEATIQN O35 GERMANY.

PREPARATZONS FBUM @UINQNE V 11'5. BYEST'JFFS.

1,3 sense.

We Drawing.

T0 aZZ 101mm it may concern:

Be it known that l. ALBRECHT Sour/nor, Ph. 1)., chemist. a citizen of the Empire of Germany, residing lilchshon;lilo-Main, Germany. have invented ceriain new andv useful Improvements in lreparations i'rcin Quinone Vat Dyesiuffs, 01 which the following is a specification.

The quinone vat-dyestuils obtainable by condensing'hezo-quinone or ce-naphthoquinone or vtheir homologues or substitution products with aromatic amine. as well as ehose obtainable, according to U. S. Patent No. EJ285368, dated February 16. 1915. by introducing sulfur into the said dyestuffsall these (lyestuils being comprised in the following specificaiion under the term quinone vat-dyestufiN-are extensively used, particularly for Wool-dyeing, either alone or in combination with other vat-(lyesi'uiis. However, these iiyestufls very often have the disarlvaniage. which could not hitherto be remedie. tha they are proclnceu in a coarsely sub-divided form, in many cases it is not advantageous. or it is even impossible to transform them into more finely sub-divided dyestuiis by a suhsequene treatmeni. This feature of ihe (lyestuils. which is variable. constitutes a drawback, particularly when they" are use l for (iyeinir wool. because a coarsely suh-clivicle. ycstufif requires a larger proporiion caustic alkali for its recluction anal i or ehe (lye vat than a more. finely suh-rli'v lerl ciyesiufi re quires. ll, is therefore very oiiiiculi for the iiyer always to keen fiche vat at ihe same legree of alkalinity if he uses (lyesiuils ialren from different consignments. and suihciently e0 preserve the Wool ma fe'ria irom leterioraiion by ihe action of the alkali. Attempts to convert these dyestuffs into commercial leuco prod cts. such as are p epared from incli e. have iailecl. the alkali metal salts of the corresponding leuco compounds being soluble Wiih too great :iiihcnlly.

By my present invention the leuco-alkali metal salts from the ouinone vat-dyestuffs, wi'eh the exception of the an zhraquinone-val;

dyestu s, are rendered extremely soluble by adding certain suitable bodies, for instance the so-callecl monopole soap. alkaline sulforicinoleaies or their derivatives such as she so-cellecl iurcone oil, or glycerin.

Specification of Letters Patent.

[application filed Seytember 2, 191%. Serial No. 859,795.

Thus it is possible to obtain from the quinone vat-dyestuffs very valuable commercial 5:: solutions. This fact is all the more surpris ing as the afoi'eseicl hoclies do not have the action upon the vat-dyestuffs derived from anihraquinone for instance dihyrleoanthraouinone-aain. known in the .tracle urn ea cler the name indanihrene As compared with she commercial quinone dyestuff-pas'tes hitherto used which, in mosi; cases, contain the fiyesauff in a very coarse 7 form. reducible with diiiiculiy. and are there fore liable to settle easily, the new vat-sole tions from the quinone vatsdyestuils have the aclvantage that they may be arlcleol cli recily to the (lye-vat Without ihe previous preparation of a stool; vat; they may he F0 either alone or in combination with she can mercial reduced indigo solution, or with solutions of leuco compounds preparecl from other clyestufis. I

The terms monopole soap and tancone oil' are the trade for cerialn substances obtainecl "from highly sulimia ricinoleic acid; that is to say, monopole soap constitutes a sodium salt of wifenateil ricinoleic aciii, as lescrihecl in German. 1% Patent No. 113.433., whereas "iurcone oil. is an aqueous soluiiion of an alkali salt of sulfonaiecl ricinoleic we. containing shone 56 "oer cent. of fatty matters.

The following exam nes illustrate my veniion:

Example 1': 53 kilos of a paste (2% per cent. sirengihl of the dyescnil obtained 'ifrom molecular proporiion of hezo-quinoneanzl two molecular proportions of para.-cl1loranilin. are heated @060" G. in a closed; essel with 600 grams of caustic soila lye oi 452 Be. specific gravity, 400 grams of tureone oil. 780 grams of water anal 220; grams of hyclrosulfite powder. The (lyestuii paste thus ohtainecl is soon reduced to a limpitl, brownish-black vat-solution of lllper cent. strength. This vat may he directly cliluteol by adding water so as to give the dye-vai;; if required, a small proportion of hyclrosul- 1% fite and ammonia may he adcled to the hath.

Example ll: 25-kilos of a paste (10 per cent. strength; of ihe clyestui? referral to in Example 111 kilos of a hyclrosulfifie solution of 12 perv cent. strength an-Mi kilos of caustic 1 Sonia lye of i0B. specific; graviiy ere heaiecl,

forone hour to 80 C.

ease

After cooling, the

. mass is slightly acidified with diluted sulfuric acid, the lcuco product formed is filtered and a vat solution. of per cent. strength. containing 2.5 kilos of turcone oil and (3.5 kilos of caustic soda lye of 1%. specific gravity, prepared therefrom.

Example HI: 1 kilo of a paste (28 per cent. strength.) of the dyestuif obtained, as described in U. S. patent application Ser. No. 754,141, by condensing chloranil with two molecuiar proportions of anilin and subsequeietly treating with sodium sulfid, is

heated for half an hour to 60 C. with e:-:clu

sion of air, together with 480 grams of canstic soda lye of 40 B. specific gravity, grams of monopole soap, grams of hydrosulfite powder and one liter of Water; the dyestufl' is thus reduced so as to give a dimpid reddish-brown vat of 10 per cent.

Ha ving now described my invention, What. I claim is:

1. As new compositionsof matter, the preparations which-contain alkali metal salts of the leuco compounds from quinone vatdyestutfs mixed with bodies suitable for dissolving these leuco compounds, and which are bodies having .a higher fatty acid base,. said preparations being readily soluble in water and otherwise showing the behavior corresponding to the well-known properties of the alkali salts of the leuco compounds contained therein.

2. As new compositions of matter, the preparations containing alkali metal salts of the leuco compounds from quinone vatdyestufis mixed with an aqueous solution of an alkali salt of sulfonated ricinoleic acid and showing a behavior corresponding to the well known properties of the alkali salts from the leuco compounds contained there in, but being readily soluble in water.

' In testimony whereof I aiiixmy signature in presence of two witnesses.

' ALBRECHT SCHMIDT. I f 'Witnesses:

JEAN GRUND, CARL Gnome. 

